Years ago I was driving through one when a flatbed towtruck came flying across the hill on the road intersecting it and hit me.
To give you an idea how fast he was going... There were skid marks for about 10m before the roundabout when he started braking, the front of his truck only contacted about the rear 1 foot of my car as I was exiting and he still hit me with enough energy that the car rolled. Driving a commodore too, about 1,500kg, not exactly light.
Woke up 20 minutes later, upside down, to the sound of the jaws of life taking my car apart and the Ambo wrapping up the bones sticking out of my shoulder.
Only had the car resprayed about 2 weeks before too
The cops charged him for all sorts and as if it wasn't bad enough he tried to pin the whole thing on me. I went to court as a witness for the police and he was saying all he saw was this, and I quote, "blur" go across the roundabout (me going mach 1 apparently) and that he was going the speed limit of 50km
His story didn't fly of course. As it happened I'd just pulled out of a driveway right near the roundabout, only had about 30m before it, not enough room to build up any speed to speak of. There was a car full of people behind me too so 3-4 witnesses there, and the investigator guys worked out pretty quickly from the tyre marks etc. what had actually happened.
Life as a pedestrian for him for a while.
